Propelling apparatus for vessels



(No Model.) I

ALONSO OARDOSO DE-LOS RIOS.v

PROPBLLINGAPPARATUS FOR VESSELS. No. 298,234. Patented May 6, 1884.

WITNESSES: INVENTOR:

@7140 6mm ,de Zad l BYMZ UNITE STATES PATENT OFFICE.

ALONSO OARDOSO DE LOS RIOS, NEW. ORLEANS, LOUISIANA.

PROPELLING APPARATUS FOR VESSELS.

SPECIFICATION forming part of Letters Patent No. 298,234, dated May 6,1884.

Application filed October 13, 1883. (No model.)

In all whom it may concern Be it known that I, ALONSO OARDoso DE LosRIOS, of New Orleans, in the parish of Orleans and State of Louisiana,have invented a new and useful Improvement in Propelling Apparatus forVessels of Navigation, of which the following is a full, clear, andexact description, reference being had to the annexed drawings, formingpart of this specification.

This invention relates to screw-propellers fo vessels; and the inventionconsistsof the construction hereinafter described and claimed.

In the drawings, Figure 1 is a side elevation of a vessel, showing myinvention. Fig. 2 is a bottom plan view showing the propellingapparatus, and Fig. 3 is a cross-section of the front propelling-screws.

A indicates the hull of a vessel, in the lower part of which is locateda driving-shaft, B. To the rear end of this shaft is attached ascrewpropeller, .O, and to the forward end is secured a pinion, D,whichmeshes with two other pinions, E E, mounted on the shafts of two otherparallel screw-propellers, F F. These propellers are made with acomparatively long axis and spiral leaves, and they may be eithercylindrical or conical. I

The rear propeller is shown as conical, with the larger end hindmost;and the front propellers are shown as made in two sections each,

which also are conicahwith the larger ends of the two sections turnedtoward each other, and v the pinions E arranged on a shaft between saidsections. The ends of the screws are to be supported in suitablebearings.

G G are guards for the propellers. With steam-power the working of thepropellers would be simplified to advantage.

To protect my front propellers I have adopted a peculiar shape offorefront of vessel, as appears at G in the drawings. This forefront ofvessel I provide not only as a protection,

but as combining also the properties of both a buoy and cut-water, itbeing hollow in its nature and terminating at sharp angles in front.

What I claim is The combination of the driving-shaft B, the

conical screw-propeller G, arranged with its

